Theoretical Calculation of Emission Properties of CuInS<sub>2</sub>/ZnS Quantum Dot Fiber

Shuai LI; Lei ZHANG

doi:10.37188/CJL.20200229

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Theoretical Calculation of Emission Properties of CuInS₂/ZnS Quantum Dot Fiber

Theoretical Calculation and Spectral Analysis | 更新时间：2020-11-10

- Theoretical Calculation of Emission Properties of CuInS₂/ZnS Quantum Dot Fiber
- Chinese Journal of Luminescence Vol. 41, Issue 11, Pages: 1403-1410(2020)
- 作者机构：
  
  牡丹江师范学院物理与电子工程学院, 黑龙江省超硬材料重点实验室, 黑龙江牡丹江 157011
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;the Youth Science Foundation of Heilong
- DOI：10.37188/CJL.20200229
  CLC： O436
- Received：02 August 2020，
  
  Accepted：2020-8-31，
  
  Published：2020-11
- 稿件说明：
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Shuai LI, Lei ZHANG. Theoretical Calculation of Emission Properties of CuInS₂/ZnS Quantum Dot Fiber[J]. Chinese journal of luminescence, 2020, 41(11): 1403-1410.
DOI：

Shuai LI, Lei ZHANG. Theoretical Calculation of Emission Properties of CuInS₂/ZnS Quantum Dot Fiber[J]. Chinese journal of luminescence, 2020, 41(11): 1403-1410. DOI： 10.37188/CJL.20200229.

摘要

在二能级系统近似下，对CuInS

/ZnS量子点光纤的发光性质进行理论计算，得到在不同量子点荧光寿命、斯托克斯频移和吸收-发射截面时，量子点发光沿光纤的传输情况。结果表明，当3个参数一定时，量子点光纤的发光强度随着光纤长度的增加而增加，但最后都趋于饱和或有所下降。当光纤长度一定时，荧光寿命、斯托克斯频移和吸收-发射截面每变化原来数值的1倍，光纤发光的相对强度分别改变7.1，10.52和2.8，因此斯托克斯频移对光纤发光强度的影响最大，其次为荧光寿命，影响最小的是吸收-发射截面。但是对光谱峰值位置影响最大的是吸收-发射截面，在80 cm光纤中，截面每增加1倍，光谱红移5.36 nm。理论计算的发光强度随光纤长度的变化趋势符合文献中的实验数据。本文为量子点光纤中掺杂材料的选择提供了一种实用的方法。

Abstract

The emission properties of CuInS

/ZnS quantum dot optical fibers(QD-OFs) were theoretically calculated under the two-level system approximation

and the transmission of QD emission along the optical fiber was obtained under different QD fluorescence lifetime

Stokes shift and absorption-emission cross section(AECS). The results showed that when the three parameters were fixed

the emission intensity of QD-OFs increased with the increasing fiber length

but all of them eventually tended to saturation or decreased. When the fiber length was fixed

the relative intensity of the fiber emission was changed by 7.1

10.52 and 2.8 for each change of the fluorescence lifetime

Stokes shift and AECS by 1 time. Therefore

Stokes shift had the greatest influence on the OF emission intensity

followed by the fluorescence lifetime

and the least influence was the AECS. However

the AECS had the greatest influence on the spectral peak position. In the 80 cm OF

the spectral redshift was 5.36 nm when the AECS increased by 1 time. The variation trend of emission intensity with fiber length calculated by theory accorded with the experimental data in the literature. This paper provides a practical method for the selection of doped materials in QD-OFs.

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Theoretical Calculation of Emission Properties of CuInS2/ZnS Quantum Dot Fiber

DOI：10.37188/CJL.20200229

摘要

Abstract

关键词

Keywords

references

Theoretical Calculation of Emission Properties of CuInS₂/ZnS Quantum Dot Fiber